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From: ih@doc.ic.ac.uk (Ian Harries)
Newsgroups: comp.sys.mac
Subject: Re: The Brute-Force method of copy protection
Keywords: copy protection, resource
Message-ID: <843@gould.doc.ic.ac.uk>
Date: 19 May 89 09:34:29 GMT
References: <616@oucsace.cs.OHIOU.EDU> <8505@phoenix.Princeton.EDU>
Reply-To: ih@doc.ic.ac.uk (Ian Harries)
Organization: Dept. of Computing, Imperial College, London, UK.
Lines: 36

In article <8505@phoenix.Princeton.EDU> bskendig@phoenix.Princeton.EDU (Brian Kendig) writes:

>In article <616@oucsace.cs.OHIOU.EDU> csachs@oucsace.cs.OHIOU.EDU (Colin Sachs) writes:

>> [request for hard disk copy-protection]
>
>  [suggestion about the System and the Finder ]

I have implemented the following 'copy-protection' on our AppleShare servers -

compile the following LightSpeed C launcher program

main() {
       Launch(0, "\pMacWrite");     /* for instance */
       } 

then give the program the same OwnerName and ICN# as the program to be
launched. Put the launcher in the same folder, make the original program
invisible and there you are ! People can copy the tiny launcher to their
heart's content - and much good may it do them. A further sophistication (?)
would be to stuff the original program with unused resources until it is
too large to fit onto a floppy.

I realise that my method requires some knowledge of the use of ResEdit.

(Also that AppleShare 2.0 supposedly provides an 'execute non-copiable'
 option !)

hope this might be useful ...

  Ian Harries                                   Department of Computing  
  MicroComputer Support Officer                 Imperial College
                                                180 Queen's Gate
  Janet: ih@uk.ac.ic.doc                        London SW7 2BZ
  DARPA: ih%doc.ic.ac.uk                        United Kingdom
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